Troubles with an old car radio.

[madmike17]

It was C29B, and it tested ok despite all the fluids that came out of it on my $20 harbor freight multimeter. The transformer T6 had an open primary, which I used a capacitor to bypass as show on the philco website. I believe the technique was called rc coupling. It seems like it must be a problem with the vibrator contacts. Would filing them be of any help, or would they be damaged?